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Elements and Performance Criteria

Required Skills

Required skills

Specific skills are required to achieve the Performance Criteria of this unit particularly for its application in the various circumstances in which this unit may be used This includes the ability to carry out the following as required to establish and maintain the inrush management plan

apply legislative organisation and site requirements and procedures for establishing and maintaining the inrush management plan

access interpret and apply technical information

access and analyse archival and historical water storage and inrush information related to the mine

interpret and apply mathematical and scientific theoremslaws related to inrush

perform inrush planning mathematical calculations

assess the risks and consequences of inrush

develop procedures appropriate to mine operations for prevention of inrush

access and apply design criteria for inrush management systems

interpret computer spreadsheets and inrush modellingsimulations

conduct enquiries investigations and prepare reports

communicate effectively in the workplace

access data from monitoring equipment

operate hand held monitoring equipment

establish inrush training requirement

Required knowledge

Specific knowledge is required to achieve the Performance Criteria of this unit particularly for its application in the various circumstances in which this unit may be used This includes knowledge of the following as required to establish and maintain the inrush management plan

legislative and site requirements for mining structures including mine plans ventilation gas monitoring strata support and safety management plans

mine planning and design

the systems of mining including tunnels drifts stone drivage shaft sinking pillar extraction partial extraction punch mining and fault drivage

stress analysis including mining induced stress and topography

sedimentology subsistence water bearing strata permeability of seam and strata hydrology hydrogeology physical property testing caving characteristics outburst over and underlying strata

systems of work including bord and pillar place changing longwall highwall auger mining pillar extraction partial extraction and punch mining

mining structure failure modes

mining and general engineering principles relevant to the behaviour of excavations in rock and coal

audit methodologies

site document control requirements

mine mapping of inrush zones related geology and features

the impact of differing geological features and conditions on inrush zones including faults dykes intrusions and strata deformities

fixed monitoring systems types useslimitations design criteria specifications and design processes

portable monitoring equipment types useslimitations

the use of simulation techniques and applications relevant to inrush

use of computerbased systems for real time monitoring

mine inrush management plan development requirements and processes

processes and techniques for determining alarms and trigger pointslevels

audit and review processes and techniques

emergency response and evacuation procedures

the effects of coal seam characteristics on inrush

methods of control of inrush

types of inrush control zones

risk management procedures

applicable mine rescue procedures

roles and responsibilities in accordance with inrush management plan

Evidence Required

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria required skills and knowledge range statement and the Assessment Guidelines for the Training Package

Overview of assessment

Critical aspects for assessment and evidence required to demonstrate competency in this unit

The evidence required to demonstrate competency in this unit must be relevant to worksite operations and satisfy all of the requirements of the performance criteria required skills and knowledge and the range statement of this unit and include evidence of the following

knowledge of the requirements procedures and instructions for establishing and maintaining the inrush management plan

implementation of procedures and techniques for the safe effective and efficient establishment and maintenance of the inrush management plan

the identification of the relevant information and scope of the work required to meet the required outcomes

the identification of viable options and the selection of inrush management techniques that best meet the required outcomes

working with others to undertake and complete the establishment and maintenance of the inrush management plan

consistent successful establishment and maintenance of the inrush management plan

Context of and specific resources for assessment

This unit must be assessed in the context of the work environment Where personal safety or environmental damage are limiting factors assessment may occur in a simulated environment provided it is realistic and sufficiently rigorous to cover all aspects of workplace performance including task skills task management skills contingency management skills and job role environment skills

Assessment of this competency requires typical resources normally used in a resources and infrastructure sector environment Selection and use of resources for particular worksites may differ due to the site circumstances

The assessment environment should not disadvantage the participant For example language literacy and numeracy demands of assessment should not be greater than those required on the job

Customisation of assessment and delivery environment to sensitively accommodate cultural diversity

Aboriginal people and other people from a non English speaking background may have second language issues

Where applicable physical resources should include equipment modified for people with disabilities Access must be provided to appropriate learning andor assessment support when required

Method of assessment

This unit may be assessed in a holistic way with other units of competency The assessment strategy for this unit must verify required knowledge and skill and practical application using more than one of the following assessment methods

written andor oral assessment of the candidates required knowledge to apply in undertaking of the establishment and maintenance of the inrush management plan

observed documented andor first hand testimonial evidence of the candidates

implementation of appropriate requirement procedures and techniques for the safe effective and efficient achievement of required outcomes

identification of the relevant information and scope of the work required to meet the required outcomes

identification of viable options and the selection of inrush management techniques that best meet the required outcomes

consistent achievement of required outcomes

first hand testimonial evidence of the candidates

working with others to undertake and complete the establishment and maintenance of the inrush management plan

provision of clear and timely required support and advice on the establishment and maintenance of the inrush management plan

Guidance information for assessment

Consult the SkillsDMC User Guide for further information on assessment including access and equity issues

Range Statement

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.
Relevant compliance documentation may include:	legislative, organisational and site requirements and procedures manufacturer's guidelines and specifications Australian standards Employment and workplace relations legislation Equal Employment Opportunity and Disability Discrimination legislation
Hazard is defined as: a source of potential harm or a situation with a potential to cause loss (definition from AS/NZS 4360:1999 Risk Management).
Risk is defined as: the chance of something happening that will have an impact upon objectives. It is measured in terms of consequences and likelihood (definition from AS/NZS 4360:1999 Risk Management).
Mine site historical information may include:	sedimentology aspects of the mine site relating to subsidence previous inrushes gas content and composition roof and floor technical data over and underlying strata water bearing strata permeability of seam and strata hydrology physical property testing results caving characteristics ground stress behaviour mine plans
Inrush may be defined as:	water or other fluid material, or any material that flows when wet; or flammable or noxious gas which may put the mine or persons at the mine at risk
Inrush control zones are those areas of heightened awareness, necessitating specialised mining, monitoring and assessment techniques e.g. protective drilling.
Inrush controls may include:	controls that eliminate the hazard by removing the damaging energy, e.g. drainage, including pumping and ventilation controls that reduce the magnitude of the hazard (less water, less pressure etc), e.g. drainage, including pumping and ventilation controls that reduce the likelihood of the event through engineering or hard barriers, e.g. seals controls that reduce the likelihood of the event through procedural or soft barriers, e.g. establishment of inrush control zones, protective drilling controls that reduce the likelihood of the event through warnings, e.g. action levels associated with increased water make
Systems of work may include:	drilling operations bord and pillar place changing long wall high wall auger mining pillar extraction partial extraction punch mining shaft sinking and drifting
Geological and physical conditions may include:	rank petrology moisture particle size seam gas pyrites seam thickness multi seams seam dip depth of cover cleat friability intrusions
Monitoring may include:	continuous and/or periodic monitoring portable (hand held) monitoring core samples visual observation geological mapping borehole pressure readings
Inrush hazards and potential sources may include:	subsidence or failure of barriers and dam walls strata failure gas content and composition abnormal rainfall events over and underlying strata water bearing strata any peat, moss, sand, gravel, silt, or other material that flows when wet which may exist on or near a mine any coal peat, moss, sand, gravel, silt, or other material that may flow from a bin or storage facility/structure permeability of seam and strata physical properties caving characteristics faults intrusions surface sources tidal waters oceans surface creeks, rivers, ponds, lakes surface impoundments or reservoirs abandoned mines workings of adjacent current mines existing workings of the mine other non-mining underground openings shafts wells pipelines tunnels
Personnel safety measures may include:	remote control mining limitation of numbers training physical barriers, e.g. drilling through stuffing box emergency equipment e.g. oxygen self rescuers personal protective equipment (PPE)
Legislative, and Site Requirements may include:	legislation and regulations relevant Australian standards management plans manager's rules OHS policy code of practice dams safety committee publications manufacturer's instructions safe working or job procedures (or equivalent)
Inrush management system establish criteria and procedures for maintaining a safe environment including:	hazard identification and quantification risk assessment authority and responsibility controls established to managed identified risks reporting and communication requirements document control audit and review procedures for mine inrush monitoring mine plan action plans response plans emergency procedures individual group responsibilities training and education procedures
Inrush prevention system must be established in accordance with the NSW Coal Mines (Underground) Regulation 1999 - Division 8, Clause 40 Implementation of an inrush prevention system.
Audit is defined as: a systematic examination against defined criteria to determine whether activities and related results conform to planned arrangement, and whether these arrangements are implemented effectively and are suitable to achieve the organisation's policy and objectives (AS/NZS 4804: 2001).